货车司机唐志明（黄秋生 饰）和妻子亚珍（程迷 饰）喜迁新居，两人对未来的生活充满了美好的期待。然而，让他们没有想到的是，没过多久，他们就遭到了黑社会的勒索和恐吓，生活陷入了恐慌之中。就在这个节骨眼上，亚珍的老相好罐头刀（黄子扬 饰）及时出现，摆平了麻烦，然而他的所作所为另有所图。 在罐头刀的利诱之下，亚珍炒起了外汇，结果亏得一塌糊涂，之后，罐头刀又诱使其借高利贷，最终亚珍被巨额利息压垮，无力偿还。恐惧令亚珍向唐志明隐瞒了事实，最终，亚珍因此而丢掉了性命。妻子惨死，一向忠恳老实的唐志明再也忍无可忍，他一改往日软弱的性格，提及屠刀决定复仇。
本片讲述相爱的人成为陌生人为止的故事。
A newly engaged couple's ski weekend goes horribly awry, when an unexpected guest arrives and the house's dark supernatural forces begin to rise.
When Dakota tries to break off her toxic relationship with Axel, it starts transforming him into a monstrous creature. He gradually succumbs to the poison of the decaying relationship, becoming a creature with increased aggression, a touch that melts skin and worst of all, he's contagious.
